package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.properties.BaiDuProperties;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private OrderDetailMapper orderDetailMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private AddressBookMapper addressBookMapper;

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private WeChatPayUtil weChatPayUtil;

    @Autowired
    private BaiDuProperties baiDuProperties;
    @Autowired
    private WebSocketServer webSocketServer;

    /**
     * 提交订单功能
     *
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
        Long userId = BaseContext.getCurrentId();
        //处理各种业务异常（地址簿为空，购物车数据为空）
        Long addressBookId = ordersSubmitDTO.getAddressBookId();
        AddressBook addressBook = addressBookMapper.getById(addressBookId);
        if (addressBook == null) {
            //抛出业务异常
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //查询当前购物车数据
        ShoppingCart shoppingCart = ShoppingCart.builder().userId(userId).build();

        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);

        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            //抛出业务异常
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //查询配送地址是否超过范围，超过则抛出异常
        checkOutOfRange(addressBook.getDetail());

        //向订单表插入一条数据

        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        log.info("orders:{}", orders);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setUserId(userId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);


        User user = userMapper.getById(userId);
        String userNam = user.getName();
        orders.setUserName(userNam);


        orders.setAddress(addressBook.getDetail());
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());

//        //todo餐具和送达时间 order_detail订单详细表，订单插入数据库
        if (orders.getEstimatedDeliveryTime().isEqual(LocalDateTime.now().plusHours(1))) {
            orders.setDeliveryStatus(1);
        }

        if (orders.getTablewareNumber() > 0) {
            orders.setTablewareStatus(1);
        }

        //插入订单表订单数据
        orderMapper.insert(orders);

        //为订单详细表准备数据

        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            //方法一
//            OrderDetail orderDetail = OrderDetail.builder()
//                    .name(cart.getName())
//                    .image(cart.getImage())
//                    .orderId(orders.getId())
//                    .dishId(cart.getDishId() != null ? cart.getDishId() : null)
//                    .setmealId(cart.getSetmealId() != null ? cart.getSetmealId() : null)
//                    .dishFlavor(cart.getDishFlavor() != null ? cart.getDishFlavor() : null)
//                    .number(cart.getNumber())
//                    .amount(cart.getAmount())
//                    .build();
            //方法二
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }
        //为订单详细表批量插入订单详细
        orderDetailMapper.insertBatch(orderDetailList);
        //清空购物车
        shoppingCartMapper.deleteByUserId(userId);

        return OrderSubmitVO.builder()
                .id(orders.getId())
                .orderAmount(orders.getAmount())
                .orderNumber(orders.getNumber())
                .orderTime(orders.getOrderTime())
                .build();
    }


    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
//        Long userId = BaseContext.getCurrentId();
//        User user = userMapper.getById(userId);

//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }

        JSONObject jsonObject = new JSONObject();
        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));
        Orders orders = new Orders();
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setNumber(ordersPaymentDTO.getOrderNumber());
        orderMapper.updateByNumber(orders);
        Orders orderByNumber = orderMapper.getByNumber(ordersPaymentDTO.getOrderNumber());

        //通过websocket向客户端浏览器推送消息 type orderId content
        Map map = new HashMap();
        map.put("type", 1);//1、表示来单提醒，2表示客户催单
        map.put("orderId", orderByNumber.getId());
        map.put("content", "订单号：" + ordersPaymentDTO.getOrderNumber());

        String jsonString = JSONObject.toJSONString(map);
        webSocketServer.sendToAllClient(jsonString);


        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
    }

    /**
     * 查询历史订单
     *
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult pageHistoryOrders(OrdersPageQueryDTO ordersPageQueryDTO) {
        Long userId = BaseContext.getCurrentId();
        ordersPageQueryDTO.setUserId(userId);
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> ordersPage = orderMapper.pageQuery(ordersPageQueryDTO);
        List<Orders> pageResult = ordersPage.getResult();
        List<OrderVO> orderVOList = new ArrayList<>();
        for (Orders orders : pageResult) {
            OrderVO orderVO = new OrderVO();
            Long id = orders.getId();
            List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
            BeanUtils.copyProperties(orders, orderVO);
            orderVO.setOrderDetailList(orderDetailList);
            orderVOList.add(orderVO);

        }


        long total = ordersPage.getTotal();

        return new PageResult(total, orderVOList);
    }

    /**
     * 获取订单详情
     *
     * @param id
     * @return
     */
    public OrderVO getOrderDetail(Long id) {
        Orders orders = orderMapper.getById(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        orderVO.setOrderDetailList(orderDetailList);

        return orderVO;
    }

    /**
     * 取消订单
     *
     * @param id
     */
    @Transactional
    public void cancelOrder(Long id) throws Exception {
        Orders orderDB = orderMapper.getById(id);
        if (orderDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        if (orderDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(orderDB.getId());
        if (orderDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
//            weChatPayUtil.refund(
//                    orderDB.getNumber(), //商户订单号
//                    orderDB.getNumber(), //商户退款单号
//                    new BigDecimal(0.01),//退款金额，单位 元
//                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelTime(LocalDateTime.now());
        orders.setCancelReason("用户取消");
        orderMapper.update(orders);

//        Orders orders = Orders.builder()
//                .id(id)
//                .status(6)
//                .build();
//        orderMapper.update(orders);

//        orderDetailMapper.deleteByOrderId(id);

    }

    /**
     * 再来一单
     *
     * @param id
     */
    public void repetitionOrder(long id) {
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
        List<ShoppingCart> shoppingCartList = new ArrayList<>();
        Long userId = BaseContext.getCurrentId();
        for (OrderDetail orderDetail : orderDetails) {
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetail, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartList.add(shoppingCart);
        }

        shoppingCartMapper.insertBatch(shoppingCartList);

    }

    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<OrderVO> orderVOPage = orderMapper.pageQueryByCondition(ordersPageQueryDTO);


        List<OrderVO> orderVOList = orderVOPage.getResult();
        long total = orderVOPage.getTotal();

        for (OrderVO orderVO : orderVOList) {
            orderVO.setOrderDishes(getOrderDishesStr(orderVO));
        }


        PageResult pageResult = new PageResult();
        pageResult.setTotal(total);
        pageResult.setRecords(orderVOList);

        return pageResult;
    }

    /**
     * 各个状态的订单数量统计
     *
     * @return
     */
    public OrderStatisticsVO statistics() {

        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);


        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);

        return orderStatisticsVO;
    }

    /**
     * 接单
     *
     * @param ordersConfirmDTO
     */
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        ordersConfirmDTO.setStatus(Orders.CONFIRMED);
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersConfirmDTO, orders);
        orderMapper.update(orders);
    }

    /**
     * 派送
     *
     * @param id
     */
    public void delivery(Long id) {
        // 根据id查询订单
        Orders orders = orderMapper.getById(id);
        // 校验订单是否存在，并且状态为3
        if (orders == null || !Objects.equals(orders.getStatus(), Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

        orderMapper.update(orders);
    }

    /**
     * 完成订单
     *
     * @param id
     */
    public void complete(Long id) {
        // 根据id查询订单
        Orders orders = orderMapper.getById(id);
        // 校验订单是否存在，并且状态为4
        if (orders == null || !Objects.equals(orders.getStatus(), Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.COMPLETED);

        orderMapper.update(orders);
    }

    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        // 根据id查询订单
        Orders orderDB = orderMapper.getById(ordersRejectionDTO.getId());
        // 订单只有存在且状态为2（待接单）才可以拒单
        if (orderDB == null || !orderDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //支付状态
        Integer payStatus = orderDB.getPayStatus();

        if (payStatus.equals(Orders.PAID)) {
            //用户已支付，需要退款
            log.info("模拟：退款给用户中。。。");
        }
        // 拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
        Orders orders = new Orders();
        orders.setId(orderDB.getId());
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelTime(LocalDateTime.now());
        //更新订单信息
        orderMapper.update(orders);
    }

    /**
     * 管理员端取消订单
     *
     * @param ordersCancelDTO
     */
    public void adminCancelOrder(OrdersCancelDTO ordersCancelDTO) {
        Long id = ordersCancelDTO.getId();
        Orders orderDB = orderMapper.getById(id);
        Integer payStatus = orderDB.getPayStatus();
        if (payStatus == 1) {
            log.info("模拟：退款给用户中。。。");
        }
        Orders orders = new Orders();
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setId(id);
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 客户催单
     *
     * @param id
     */
    public void reminder(long id) {

        //根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        //检验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        Map map = new HashMap();
        map.put("type", 2);
        map.put("orderId", id);
        map.put("content", "订单号：" + ordersDB.getNumber());

        String jsonString = JSONObject.toJSONString(map);
        webSocketServer.sendToAllClient(jsonString);

    }

    /**
     * 根据订单id获取菜品信息字符串
     *
     * @param orderVO
     * @return
     */
    private String getOrderDishesStr(OrderVO orderVO) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orderVO.getId());

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            return x.getName() + "*" + x.getNumber() + ";";
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }


    /**
     * 检查客户的收货地址是否超出配送范围
     *
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address", baiDuProperties.getAddress());
        map.put("output", "json");
        map.put("ak", baiDuProperties.getAk());

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address", address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin", shopLngLat);
        map.put("destination", userLngLat);
        map.put("steps_info", "0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if (distance > 5000) {
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }

}
